Bearing structure

摘要

A deflector is arranged to prevent differential oil, as lubrication oil, leaking from a gap between a rod of an axle and a shaft portion of a drive shaft and passing through a unit bearing, from attaching to an inner periphery of a brake drum. A guide groove unit is formed on an inward surface of a hub in a vehicle-width direction so as to guide the differential oil leaking into an internal space defined inside of the deflector to outside of the brake drum.

主权项

1. A bearing structure wherein a hub is rotatably fitted, through a bearing, over a rod protruded from an end of an axle, a drive shaft being inserted into said axle from a rod side and having a flange formed on an end thereof away from the inserted end and fastened to an outward surface of said hub in a vehicle-width direction for rotation of said hub through said drive shaft, a brake drum being mounted on an inward surface of a flange of said hub in the vehicle-width direction for rotation of the brake drum integrally with said hub,
said bearing structure comprising a deflector arranged to prevent lubrication oil, which leaks from a gap between the rod of said axle and a shaft portion of the drive shaft to pass through said bearing, from attaching to an inner periphery of the brake drum, and a guide groove unit formed on an inward surface of said hub in the vehicle-width direction to guide the lubrication oil, which leaks in an internal space defined inside of said deflector, outside of the brake drum.